Is iron sulfide a chemical or physical change?

Answer 1

It is a physical change because the components are not changed. Take for example, Trail Mix. In Trail Mix, you mix pretzels, M&Ms, raisins, etc. After it is all mixed, it is still possible to pick out the different pieces. If you take out a pretzel, that pretzel will have the same properties as it did before.

Answer 2

Not unless there are any other chemicals present when the heating occurs. Otherwise, if the temperatures are hot enough, Fe and S would just change state, a physical change. Think of it as the same thing as heating water. The boiling water does not form some new compound, it just changes its physical nature from a liquid to water vapor, a gas.

NEW:

Actually if you were to heat Fe(iron) and S(sulphur) then you would actually get a new substance. this is a chemical change. you see when you heated it you must have heated it up in a crucifle when you open it later on then you will see a grey powdery substance that has formed and also give off a new gas.

IN CONCLUSION: yes this is a chemical change

Answer 3

Mixing elemental iron and elemental sulfur is actually physical, but the mixture stays heterogenous. The particles of iron do not interchange with those of the sulfur.

If they were to be melted and alloyed then it would be a physical change, but this is not reality:

In stead they react (chemically!) when heated to form ferrous sulfide, FeS, which is a totally new compound.

Fe + S --> FeS

Answer 4

Physical because both substances are not chemically altered, they are just mixed which can be reversed.

Answer 5

It is a chemical change as it is irreversible.

Answer 6

Mixing iron filings and sand at room temperature is a physical change, not a chemical change.

Answer 7

physical

Answer 8

Yes

Answer 9

chemical